CVE-2026-13377
Last modified
CVE-2026-13377 is a medium-severity vulnerability rated 4.8/10 on the CVSS scale. Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in WatchGuard Fireware OS SIP Proxy module allows Stored XSS. This vulnerability is an additional unmitigated attack path for CVE-2025-6947.. EPSS estimates a 0.27% chance of exploitation in the next 30 days.
Description
Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in WatchGuard Fireware OS SIP Proxy module allows Stored XSS. This vulnerability is an additional unmitigated attack path for CVE-2025-6947.
Metrics
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Watchguard | Fireware | >= 12.0, < 12.12.1 |
| Watchguard | Fireware | >= 2025.1, < 2026.2.1 |
| Watchguard | Fireware | >= 12.5, <= 12.5.18 |
References
Timeline
- Published
- Last Modified
- Status
- Modified
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How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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